Bicycle



FIG. 1 is a front view of a bicycle;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a left-side view thereof; and,

FIG. 6 is a perspective view thereof looking from the upper right-sidedirection.

The ornamental design for a bicycle, as shown and described.